Package: postgresql-13-ogr-fdw Source: pgsql-ogr-fdw Version: 1.1.9-1.pgdg26.04+1 Architecture: amd64 Maintainer: Debian GIS Project Installed-Size: 133 Depends: postgresql-13, libc6 (>= 2.38), libgdal39 (>= 3.7.0) Provides: postgresql-ogr-fdw Homepage: https://github.com/pramsey/pgsql-ogr-fdw Priority: optional Section: database Filename: pool/main/p/pgsql-ogr-fdw/postgresql-13-ogr-fdw_1.1.9-1.pgdg26.04+1_amd64.deb Size: 35564 SHA512: b739755a3954063a2c8bd71f932193c70df4ab9da8399c1d69513f460f4007fa828ad9d844260ca303e0e4950acb9652cd6b47f3cdba0210ff22d5e7947201ee SHA256: ba0d3e0a3a270cb346c434b7386e0e3e56a11fa5075fe704fa2f847c9705db19 SHA1: d0d3c32dd9cc51d76f75bdf0fff1b3550a654e4b MD5sum: 0b1d0f2c598f495b9d3a05c402e3540a Description: PostgreSQL foreign data wrapper for OGR OGR is the vector half of the GDAL spatial data access library. It allows access to a large number of GIS data formats using a simple C API for data reading and writing. Since OGR exposes a simple table structure and PostgreSQL foreign data wrappers allow access to table structures, the fit seems pretty perfect. . This implementation currently has the following limitations: * Only non-spatial query restrictions are pushed down to the OGR driver. PostgreSQL foreign data wrappers support delegating portions of the SQL query to the underlying data source, in this case OGR. This implementation currently pushes down only non-spatial query restrictions, and only for the small subset of comparison operators (>, <, <=, >=, =) supported by OGR. * Spatial restrictions are not pushed down. OGR can handle basic bounding box restrictions and even (for some drivers) more explicit intersection restrictions, but those are not passed to the OGR driver yet. * OGR connections every time Rather than pooling OGR connections, each query makes (and disposes of) two new ones, which seems to be the largest performance drag at the moment for restricted (small) queries. * All columns are retrieved every time. PostgreSQL foreign data wrappers don't require all columns all the time, and some efficiencies can be gained by only requesting the columns needed to fulfill a query. This would be a minimal efficiency improvement, but can be removed given some development time, since the OGR API supports returning a subset of columns.